UNLOCK INSTRUCTIONS:
To read security codes using sever:
1. Power on the phone.
2. Tap 7 times on 'Build number' in 'Settings'-'About phone' to enable 'Developer options',
go to 'Settings'-'Developer options' and enable 'USB debugging'.
3. Connect the phone to PC with USB cable, install drivers if needed.
4. Select device in ADB settings.
5. Press 'Unlock' button, select 'Unlock via server ...' algo,
write your login and password in window if it will appear.
(Login and password will be saved as default after first input and can be changed in settings.)
Operation: Read Codes via Server [UPLOAD 2021]
Selected model: SM-G970F
Software version: 43.27
Checking Login and Password... Login attached to different card!
Checking Login and Password... Login attached to different card!
Checking Login and Password... Login attached to different card!
Checking Login and Password... Login attached to different card!
Checking Login and Password... canceled
Done with Samsung Tool PRO v.43.27 [SM-G970F,Read Codes via Server [UPLOAD 2021]]